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遥感技术与应用  2003, Vol. 18 Issue (2): 103-108    DOI: 10.11873/j.issn.1004-0323.2003.2.103
图像处理     
基于椭圆轨道的星载SAR面目标原始数据模拟
万 锋1,2,赵宇鹏1,2,杨汝良2
(1.中国科学院研究生院,北京 100039;2.中国科学院电子学研究所,北京 100080)
Area Target's Raw Data Simulation of Spaceborne SAR Based on Elliptical Orbit
WAN Feng1,2, ZHAO Yu-peng1,2, YANG Ru-liang2
(1.Institute of Electronics,The Chinese Academy of Sciences,Beijing100080,China;2.Graduate School,The Chinese Academy of Sciences, Beijing100039,China)
 全文: PDF 
摘要:

提出了一种基于椭圆轨道的星载SAR面目标原始数据模拟的方法。首先通过建立椭圆轨道的卫星平台和地球上目标的运动模型,求出卫星平台与目标的距离变化规律,并分析了这个距离与由其它模型得到的距离的不同及其对方位向压缩成像的影响。然后给出了面目标的原始数据模拟的方法,详尽地描述了整个模拟过程。最后给出并分析了原始数据压缩的方法及成像结果。
 

关键词: 星载SAR椭圆轨道模拟面目标    
Abstract:

A method of area target' s raw data simulation of spaceborne SAR based on elliptical orbit is presented. Foremost, based on models of satellite with elliptical orbit and targets with rotation of the earth,the distance between the satellite platform and target can be attained, which is compared with the one obtained by other models. The effect of the difference between the elliptical orbit model and circle orbit model on the azimuth compression is analyzed. An optimum method based on polynomial model is brought out.Then, the method and whole procedure of simulating area target' s raw data are described. The detailed description of math model of area target' s echoes is given first. Following are the steps of simulating raw data of area target. Lastly, the image of the compressed raw data is illustrated and analyzed. The validity of compression algorithm is proved by the compressed result of single point target. After the comparison between the compressed image of raw data simulated and the original image, the conclusion can be reached that this paper' s method of simulating raw data of area target is right.

Key words: Spaceborne SAR    Elliptical orbit    Simulation    Area target
收稿日期: 2002-10-29 出版日期: 2011-11-23
:  TP 75  
作者简介: 万锋(1979-),男,硕士研究生,主要从事合成孔径雷达数据模拟及信号处理研究。
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引用本文:

万 锋,赵宇鹏,杨汝良. 基于椭圆轨道的星载SAR面目标原始数据模拟[J]. 遥感技术与应用, 2003, 18(2): 103-108.

WAN Feng, ZHAO Yu-peng, YANG Ru-liang. Area Target's Raw Data Simulation of Spaceborne SAR Based on Elliptical Orbit. Remote Sensing Technology and Application, 2003, 18(2): 103-108.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2003.2.103        http://www.rsta.ac.cn/CN/Y2003/V18/I2/103

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